Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c65cf59b460d7261e5e3.PNG' />
The above figure shows a bulb connected to a cell in two different ways. What will be the direction of the current through the bulb in the case B ?
Question 2 :
State whether True or False: Human body is an insulator of electricity.
Question 3 :
Fill in the blank: Materials which do not allow electric current to pass through them are called __________ of electricity.
Question 4 :
Fill in the blank : A device that is used to break an electric circuit is called _______.
Question 5 :
Which of the following device is used to perform the activity to heat water?
Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c661f59b460d7261e5ea.PNG' />
In the above figure, state whether the direction of current is correct or not.
Question 7 :
Fill in the blank: A ________ has a bulb that lights up when it is switched on.
Question 8 :
Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow?
Question 9 :
Fill in the blanks: In an electric circuit, the direction of current is taken to be from the ________ terminal to the ________ terminal of the electric cell.
Question 11 :
Fill in the blank: Switches, electrical plugs and sockets are made of _________.
Question 12 :
Fill in the blank: Electricity to the bulb in a torch is provided by the ________.
Question 13 :
State whether True or False: The switches can not be used in lighting of electric bulbs and other devices in homes.
Question 14 :
State whether True or False: An electric cell produces electricity from the chemicals stored inside it.
Question 15 :
A switch is the source of electric current in a circuit. State TRUE or FALSE?